Studies on the reproductive endocrinology of the penaeid prawn, Penaeus indicus H. Milne Edward

The present investigation has been carried out to understand the process and events leading to maturation of the ovary and testis in the Indian white prawn Penaeus indicus. The study includes the classification of the ovarian maturity stages based on its colour, gonadosomatic index, oocyte diameter and morphological changes in the oocyte. Further the process of oogenesis has been investigated using light and electron microscopic techniques. A histochemical study of the ovary has also been carried out to determine the sequence in which yolk substances are synthesized or sequestered in the oocytes and also to elicit the nature of the penaeid yolk material. The process of spermatogenesis and the development of the spermatophore has been studied in detail using light and electron microscopic methods. In addition a brief histochemical study on the testis was also made to understand the nature of the organic reserves in the sperm cells.

Política exterior de Estados Unidos en Asia Central y el Medio Oriente. In memóriam Edward Wadie Said

 

Edward Hopper : guía didáctica de la exposición.

Se intenta hacer una aproximación a la obra del pintor Edward Hopper, a través de una visita por la fundación Juan March, que alberga parte de su obra. El material utilizado para desarrollar esta serie de actividades en torno a dicho artista, es un cuadernillo realizado por el centro de profesores de Madrid Norte y dirigido principalmente a los alumnos de Bup y del ciclo superior de EGB..

Bisky bats and pussy cats : the animal nonsense of Edward Lear.

Colección de poemas que tratan de animales, a veces, absurdos, y disfrazados, también, de forma absurda, rodeados asimismo, de objetos absurdos.